User Guide
Table Of Contents
- 3 3RT1 contactors/ 3RH1 control relays
- 3.1 Specifications/regulations/approvals
- 3.2 Device description
- 3.3 Application and areas of use
- 3.3.1 3RT10 contactors with 3 main contacts for switching motors
- 3.3.2 3RT14 contactors with 3 main contacts for switching resistive loads (AC-1)
- 3.3.3 3RT12 Vacuum contactors
- 3.3.4 3RT13 and 3RT15 contactors with 4 main contacts
- 3.3.5 3RT16 capacitor contactors
- 3.3.6 Contactors with an extended operating range
- 3.3.7 3RH1 control relays
- 3.3.8 3RT10 contactor relays for switching motors (interface) and 3RH11 control relays for switching auxiliary circuits
- 3.3.9 3RA13 Contactor combinations for reversing
- 3.3.10 3RT14 Wye-delta combinations
3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-74 GWA 4NEB 430 0999-02 DS 01
Compensating for dif-
ferent depths for the
mechanical interlock
In wye-delta combinations with contactors of different frame sizes, it is nec-
essary to compensate for the mounting depth of the smaller contactor.
One frame size is the maximum difference possible.
The following depth compensation must be made for a mechanical interlock
attached at the side:
• S2-S2-S0: K3: 1.5 mm; K2: 0 mm
• S3-S3-S2: K3: 0 mm; K2: 27.5 mm
Mounting and connec-
tion
The wye-delta combinations have screw-type connections that are suitable
for both screw-on and snap-on mounting on the 35 mm rail.
Conductor cross-sec-
tions
The permissible conductor cross-sections of the wye-delta combinations
correspond to those of the basic units for the corresponding frame size.
Circuit diagrams Main circuit:
S00 S0
Fig. 3-32: Wye-delta combinations, main power circuit (frame sizes S00 to S12)
L1
L2
L3
F1
K1 K3
M
3
~
NSB00642
U1
V1
W1
F0
K2
135
246
W2
U2
V2
135
2
46
M
U1
V1
W1
W2
U2
V2
3AC 50Hz ...V
3
~
L1
L2
L3
F1
K1 K3
M
3
~
NSB00645
U1
V1
W1
F0
K2
135
246
W2
U2
V2
135
2
46
M
U1
V1
W1
W2
U2
V2
3AC 50Hz ...V
3
~
L1
L2
L3
F1
K1 K3
M
3
~
NSB00648
U1
V1
W1
F0
K2
135
246
W2
U2
V2
135
2
46
M
U1
V1
W1
W2
U2
V2
3AC 50Hz ...V
3
~
F0
S2 to S12